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Old 08-14-2010, 05:31 AM   #1
Zefy
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Member#: 105104
Join Date: Jan 2006
Chapter/Region: VIC
Location: Coquitlam, BC, Canada
Vehicle:
1979 BRAT / 01 RSTI
99 2.5TS (DEAD) / 87 GL

Default Engine swap issues. Need some input!

ej22 swap from the brat USED to run like a top. Now that i'm trying to get the old brat up and running again it is giving me issues. Need some input to see if I'm missing anything.

Motor is a 1990 auto legacy ej22. Wiring has been stripped and reduced to a 'stand alone' system. Stock everything except the air box, exhaust, and fuel pump.

Car will start and run PROPERLY but will die ~5 seconds after starting.

I have checked/changed the maf, IAC, ecu, main relay, fuel pump relay, cam sensor... list continues...

I have also cleaned ALL of my engine/ecu powers and grounds. Confirmed my voltages at 4 of the ecu powers, injector, coil, TPS all giving the same results. (13.5v priming, 12v cranking, and 14v running)

Checked continuity between the ecu and the tps, IAC, maf, and cam sensor.

also checked my fuel pressure (remember this is an n/a motor) and i have 40psi at prime and 30-35 while running.

pressing the throttle makes it bog.

please give me some thoughts and ideas to what it could be.

Full troubleshooting overview can be found here:

http://www.ultimatesubaru.org/forum/...505#post947505
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Old 08-14-2010, 04:09 PM   #2
PhilSine
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Member#: 130489
Join Date: Oct 2006
Chapter/Region: MWSOC
Location: Superior, WI
Vehicle:
02 WRX Wagon (WRB)
98 OBS-T, 91 Legacy SS

Default

Stupid question time...

Are the fuel and return lines running to the correct places?

Just last week I got them mixed up upon re-installing an engine and quickly realized my error. The symptom was exactly as you describe.
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Old 08-14-2010, 05:17 PM   #3
Patrick Olsen
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Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

That's a good one, Philsine, and not something I would have ever thought to ask.

I've got nuthin'.
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Old 08-14-2010, 05:24 PM   #4
Zefy
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Member#: 105104
Join Date: Jan 2006
Chapter/Region: VIC
Location: Coquitlam, BC, Canada
Vehicle:
1979 BRAT / 01 RSTI
99 2.5TS (DEAD) / 87 GL

Default

i think they are in the right place. if memory serves me correctly (i don't have access to the car) it should be the feed line on the top, return line in the middle, and vent on the bottom. Correct?
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Old 08-14-2010, 05:51 PM   #5
Chi_San
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Join Date: Jan 2004
Chapter/Region: NWIC
Location: Deadford, OR
Vehicle:
2002 WRX Wagon
Silver

Default

How much fuel pressure are you getting at your fuel rail? If that is fine, then honestly, it's time to check your vacuum lines.
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Old 08-14-2010, 11:46 PM   #6
Zefy
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Member#: 105104
Join Date: Jan 2006
Chapter/Region: VIC
Location: Coquitlam, BC, Canada
Vehicle:
1979 BRAT / 01 RSTI
99 2.5TS (DEAD) / 87 GL

Default

i am getting 40psi after priming, and about 30-35psi while running... this should be plenty for a an n/a ej22 no?
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Old 08-15-2010, 12:03 AM   #7
yarrgh
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Join Date: Jan 2005
Chapter/Region: RMIC
Location: Aurora, CO
Vehicle:
2001 2.5RS
Black Diamond Pearl

Default

Looking at the other thread, you say that you had the IACV on/off, has it been recalibrated?
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